56997660 has 24 divisors (see below), whose sum is σ = 159593616. Its totient is φ = 15199360.

The previous prime is 56997659. The next prime is 56997671. The reversal of 56997660 is 6679965.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474921 + ... + 475040.

It is an arithmetic number, because the mean of its divisors is an integer number (6649734).

Almost surely, 2^56997660 is an apocalyptic number.

It is an amenable number.

56997660 is an abundant number, since it is smaller than the sum of its proper divisors (102595956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56997660 is a wasteful number, since it uses less digits than its factorization.

56997660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949973 (or 949971 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 48.

The square root of 56997660 is about 7549.6794633945. The cubic root of 56997660 is about 384.8448466856.

The spelling of 56997660 in words is "fifty-six million, nine hundred ninety-seven thousand, six hundred sixty".